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Extend documention and use some more pythonier loops

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This commit is contained in:
Stephan Kulow 2022-11-02 13:29:18 +01:00
parent 05a5e6aea7
commit a1ead29734
1 changed files with 16 additions and 7 deletions
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23
lib/db_revision.py
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@ -1,5 +1,8 @@
from __future__ import annotations
import logging
from hashlib import md5
from typing import Optional
from lib.db import DB
from lib.request import Request
@ -204,18 +207,24 @@ class DBRevision:
self._files.sort(key=lambda x: x["name"])
return self._files
def calc_delta(self, db: DB, current_rev=None):
"""Calculate the list of files to download and to delete"""
old_files = dict()
def calc_delta(self, db: DB, current_rev: Optional[DBRevision]):
"""Calculate the list of files to download and to delete.
Param current_rev is the revision that's currently checked out.
If it's None, the repository is empty.
"""
to_download = []
to_delete = []
if current_rev:
for entry in current_rev.files_list(db):
old_files[entry["name"]] = f"{entry['md5']}-{entry['size']}"
old_files = {
e["name"]: f"{entry['md5']}-{entry['size']}"
for e in current_rev.files_list(db)
}
else:
old_files = dict()
for entry in self.files_list(db):
if old_files.get(entry["name"], "") != f"{entry['md5']}-{entry['size']}":
if old_files.get(entry["name"]) != f"{entry['md5']}-{entry['size']}":
logging.debug(f"Download {entry['name']}")
to_download.append(entry["name"])
to_download.append((entry["name"], entry["md5"]))
old_files.pop(entry["name"], None)
for entry in old_files.keys():
logging.debug(f"Delete {entry}")